|
Definition: "An ergogenic aid is any substance or phenomenon that enhances performance "
|
|
||||||||
02.01.2014 |
|
|
Post-strength training testosterone peak higher with CLA
We recently wrote about an Italian animal study in which mice that did daily high-intensity endurance exercise synthesised more testosterone when they were given CLA. A year previously the same authors published the results of a human study on the effects of CLA on testosterone levels.
The results of the in-vitro study are shown below.
The Italians then turned their attention to whether humans also produce more testosterone when they are given CLA. The researchers gave 10 highly trained male strength athletes – average age 27 – a daily dose of 6 g CLA for three weeks. Before and after the supplementation period the researchers got their subjects to do weight training and analysed the men's blood before and after working out.
During another period of three weeks the men were given a placebo.
The researchers observed no effects of the CLA supplementation on the concentration of estradiol, cortisol or SHBG. They did discover though that the men synthesised more testosterone after working out as a result of CLA supplementation.
The Italians observed no change in strength or body composition.
"The results of the present study show that CLA may have an effect on testosterone synthesis, although only a potentially slight increase in total testosterone compared with the placebo was observed in physically active men", the researchers conclude. "It means that CLA might be used as an ergogenic aid to increase the anabolic effect of a resistance exercise bout, but further research is needed to understand the physiological relevance of this slight effect on testosterone."
Source:
More:
|
|
